Facile fabrication of a novel high performance CO2 separation membrane: Immobilization of poly(amidoamine) dendrimers in poly(ethylene glycol) networks

✍ Scribed by Ikuo Taniguchi; Shuhong Duan; Shingo Kazama; Yuichi Fujioka

• Book ID: 104054861
• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 540 KB
• Volume: 322
• Category: Article
• ISSN: 0376-7388
• DOI: 10.1016/j.memsci.2008.05.067

✦ Synopsis

Poly(amidoamine) (PAMAM) dendrimers showed high CO 2 separation properties and were successfully immobilized in a poly(ethylene glycol) (PEG) network upon photopolymerization of PEG dimethacrylate. The PAMAM dendrimer incorporation ratio was readily controlled, and a stable self-standing membrane containing up to 75 wt.% PAMAM dendrimer was obtained. The CO 2 separation properties over smaller H 2 were investigated by changing the PAMAM dendrimer content or generation and CO 2 partial pressure ( P CO 2 ) under atmospheric conditions. Especially, a polymeric membrane containing 50 wt.% PAMAM dendrimer (0th generation) exhibited an excellent CO 2 /H 2 selectivity of 500 with CO 2 permeability of 2.74 × 10 -14 m 3 (STP)m/(m 2 s Pa) or 3.65 × 10 3 barrer (1 barrer = 7.5 × 10 -18 m 3 (STP)m/(m 2 s Pa)) when a mixture gas (CO 2 /H 2 : 5/95 by vol.) was fed at 25 • C and 100 kPa with 80% relative humidity. This polymeric materials are promising for a novel CO 2 separation membrane.